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This paper presents the application of S-transform and rule based system for diagnosing power quality problems which are related to voltage disturbances. Such voltage disturbances can be caused by permanent or non permanent faults. A permanent fault causes permanent damage and power interruption to the customers whereas a non permanent fault can be categorized as either transient or incipient faults...
Avascular necrosis (AVN) of the talus is a well-documented complication following fractures of the neck of the talus. Minor trauma and several medical conditions are also known to cause AVN. Iatrogenic AVN is caused by certain surgical procedures of the ankle and foot. AVN of the talus without a preceding cause is very rare. We wish to report a case of an idiopathic simultaneous bilateral AVN of talus,...
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